One Nation: 'We Are The Losers'

Hanson claims her NSW senator "sold out".

One Nation could be on the verge of casting loose yet another senator, with Pauline Hanson letting loose on NSW representative Brian Burston after he broke ranks on the government's tax cuts.

The three One Nation senators -- Hanson, Burston and WA's Peter Georgiou -- had initially supported the government's plan for big cuts to company tax, but Hanson sensationally announced last week she would renege on a pledge to vote for the changes.

"I keep finding out One Nation policies when I read them in The Australian newspaper," he said.

On Thursday, Hanson and Georgiou held a press conference at Parliament House, where the party leader claimed Burston had "sold out" the party's position in a deal with the government. Hanson said she called Burston last week to inform him she would not back the tax cuts, and he had agreed with her decision.

She defended her decision not to support the cuts, claiming the "erosion of Australian companies by multinationals who are coming in here, abusing our system".

She said multinational companies were "using it for what they can get out of it and we are the losers, the Australian people are the losers".

"[Burston] feels that he did a deal with [finance minister Mathias] Cormann. He's sold himself out.... to me, it's more important we have to protect our Australian companies and industries here."

Georgiou jumped in to refute a question over whether Burston had "sold out One Nation" -- despite his leader, standing beside him, having claimed just that -- but Hanson went on to issue what has been seen as a threat to Burston's future preselection as a One Nation candidate at the next election.

"Just because you are automatically a senator in this place doesn't mean to say you have automatic top of the ticket," she said.

The WA senator looked around, confused, then saw the empty spot where Hanson had been standing previously.

"Actually I didn't realise she walked away. So I think I'll be walking away too now," he grinned, leaving the cameras to flash in his wake.

Earlier this month, ten daily reported Burston had started quietly deleting One Nation references from his Facebook and Youtube pages, as well as starting an Instagram profile without any party reference.